首页|Metals and microorganisms in a Maar lake sediment core indicating the anthropogenic impact over last 800 years

Metals and microorganisms in a Maar lake sediment core indicating the anthropogenic impact over last 800 years

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  • Elsevier
A closed Maar lake, receiving mostly atmospheric deposition, offers a unique setting for investigating the impactof human activities on the environment. In this study, we aimed to investigate the historical record of metals incore sediments of Maar Lake in Huguangyan (HGY), Southeast China, and elucidate the possible microbial responsesto anthropogenic metal stress. Five stages were divided according to the historical record of metals andcorresponding distribution of microbial community, among which Pb and Sn showed a peak value around 1760CE, indicating the ancient mining and smelting activities. Since the 1980s, a substantial enrichment of metalssuch as Zn, As, Mo, Cd, Sn, Sb, and Pb was observed, due to the rapid industrial growth in China. In terms ofmicroorganisms, Chloroflexi phylum, particularly dominated by Anaerolineales, showed significant correlationswith Pb and Sn, and could potentially serve as indicator species for mining and smelting-related contamination.Desulfarculales and Desulfobacterales were found to be more prevalent in recent period and exhibited positivecorrelations with anthropogenic metals. Moreover, according to the multivariate regression modeling and variance decomposition analysis, Pb and Sn could regulate Anaerolineales and further pose impact on the carboncycle; while sulfate-reducing bacteria (SRB) could response to anthropogenic metals and influence sulfur cycle.These findings provide new insights into the interaction between metals and microbial communities over humanhistory.

Lake sedimentTrace metalHuman activityMicrobial communityMicrobial functionIndicator

Jia Yan、Xingpan Guo、Maoyong He、Zuoshun Niu、Miao Xu、Bo Peng、Yi Yang、Zhangdong Jin

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Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road,Shanghai 200241, China

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China

Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road,Shanghai 200241, China||State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education &Shanghai, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China||Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Nor

2024

10.1016/j.scitotenv.2023.168392

Science of the Total Environment

Science of the Total Environment

EISCI
ISSN：0048-9697
年,卷(期)：2024.911(Feb.10)
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